On January 13, 2012, Acme Packet, Inc. ("Acme Packet" or the "Company") issued a press release in which it announced among other things the appointment of Dino DiPalma to the position of Chief Operating Officer, effective as of January 13, 2012.

Mr. DiPalma, 44, will oversee the global sales, customer service and support and manufacturing organizations. Mr. DiPalma has served as Acme Packet's Senior Vice President of Worldwide Sales and Business Development since January 2011 and as Acme Packet's Vice President Sales and Business Development from 2001 through January 2011.

The press release is furnished as Exhibit 99.1 to this report and incorporated by reference herein.

The information in this report (including Exhibit 99.1) is being "furnished" and shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended (the "Securities Act"), or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

(d) Exhibits

Exhibit      Description

99.1         Press Release, dated January 13, 2012, entitled "Acme Packet Makes
             Executive Appointments"